Home / 278,478,629.20-418,164,091.80-221,445,168.40

Finding the Fourth Proportional to 278,478,629.20, 418,164,091.80 and 221,445,168.40

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Solution

The fourth proportional to 278,478,629.20, 418,164,091.80 and 221,445,168.40 is: 332,522,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,478,629.20 : 418,164,091.80 = 221,445,168.40 : x
  2. Step 2: Convert to fraction form
    278,478,629.20/418,164,091.80 = 221,445,168.40/x
  3. Step 3: Cross multiply
    278,478,629.20x = 418,164,091.80 × 221,445,168.40
  4. Step 4: Simplify right side
    278,478,629.20x = 92,600,417,727,484,064
  5. Step 5: Solve for x
    x = 92,600,417,727,484,064/278,478,629.20
  6. Step 6: Final answer
    x = 332,522,527.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.